Like a gentleman
To attempt to behave as a gentleman would. A gentleman, by definition is polite, courteous and drinks beverages with his "little" or "pinky" finger sticking out. Of late the term "Like a gentleman" has tended to be tack on to the end of a sentence for humourous effect, especially in the context of drinking alcoholic beverages. See also like a lord.
I'm going to drink this beer like a gentleman.
I was drunk last night, drunk as a gentlemen.
I was drunk last night, drunk as a gentlemen.
Pass like a gentleman
Putting the blunt or joint flat in your hand as you pass it. One is to place the hot blunt in the palm of your hand and giving it to the person next to you to pick up.
Stoner 1 "hey let me hit the blunt"
Stoner 2 "okay I will pass like a gentleman" *places flat into hand*
Stoner 1 "thank you my kind sir"
Stoner 2 "okay I will pass like a gentleman" *places flat into hand*
Stoner 1 "thank you my kind sir"